I found out that there are a few people out there (including myself) with shaky hands and nervousness when flying their helis in front of a large crowd.
Apparantly olympic marksmen and other athletes/performers can take what are called beta blockers to combat anxiety/shakyness.

This is a quote from wikipedia.

Anxiety and performance enhancement
Some people, particularly musicians, use beta blockers to avoid stage fright and tremor during public performance and auditions. The physiological symptoms of the fight/flight response associated with performance anxiety and panic (pounding heart, cold/clammy hands, increased respiration, sweating, etc.) are significantly reduced, thus enabling anxious individuals to concentrate on the task at hand.

Currently, no beta blocker is approved for anxiolytic use by the U.S. Food and Drug Administration. Still, use of beta blockers to combat the physical symptoms of anxiety is not uncommon, particularly among performers, and there are studies which confirm their efficacy as anxiolytics. (Schneier 2006)

Since they lower heart rate and reduce tremor, beta blockers have been used by some Olympic marksmen to enhance performance, though beta blockers are banned by the International Olympic Committee (IOC).[2]

ahhh dont worry so much. the shaking usually stops after a crash.....

Beta blockers slow heart rate, lower blood pressure and may help settle an unwanted tremor. In some people they slow mentation & affect concentration.

Best to try them first under "non-combat" conditions, before you do the big show. If you are considering them for performance enhancement, I'd suggest short-acting ones (such as propranolol), which are not uncommonly prescribed as anxiolytics.

Beta Blockers have different effects on different people. DO NOT take them unless your doctors says to and he prescribes the correct dosage for you. Don't assume that:
1. All dosages are the same.
2. If a person is smaller than you then their dosage won't hurt you.
3. You are not allergic to it. (Anaphylactic shock!)
4. It's a good idea because a medical journal says so.
Be careful and be smart with ALL drugs....Ron

I am fortunate or unfortunate enough to have a wife who fondled me while I was flying in a FF. My buds will not let me forget that....no I didn't crash either, but it was difficult to concentrate. Hey man I want the woody later, not to have a floppy worm when the sun goes down. This gettin' old sh!t is for kids.

I find a shot of whiskey helps me.

AMA 619034

I have what is known as essential jitters (actually everyone has it, some are not noticeable because it’s so slight), it’s hereditary. It causes mild to severe shaking or trembling, you should have seen my dad eat jello (rest his soul).
It affects different parts of your body differently; mind it’s my hands and arms, had it all my life. Mine is noticeable but not server. I have seen a neurologist, tried different things, many make you dumb founded, no thanks, found one Inderal time delay. Without this, I would not be able to eat jello, write clearly or fly my heli. By the way, I also play the French horn in a community band, I still have very very mild tremors, but it does not bother me, but gives me great vibrato on the horn. When I first started taking this meds, it does affect you, until your body adjusts, then all is fine, I mean ALL. This is a prescribed med, and should only be taken with a Doctors prescription, as it affect your heart, also you have to be cautious, as it does react with some analgesics and cause heart palpitations. Don’t do Drugs

I started taking steroids a couple weeks ago. I was having trouble moving the sticks on the TX, the roids gave me the extra edge I needed to fly really solid inverted.

I would have thought any one who was nervous enough to consider unpresribed drugs , stimulants or alcohol should not be flying in front of crowds.. and should a claim arrise from an accident any insurance may well found to be void.

now there gunna need to start doing drug tests and events...

I found that, usually, after 3 shots of tequila, I could fly inverted 3 feet in front of my 6 year old daughter... Seriously guys, you've got to be crazy to use this stuff just to fly a toy. You can go into shock, or end up with a cardiac arrythmia, or worse, go into cardiac arrest and be brain dead because you want to fly a toy better? Google the side effects of beta blockers before you even try this stuff. And let's not post stuff like this, because we have kids on this forum, and kids don't have the common sense that us adults do, or in this case, don't. By the way, I do know what I'm talking about. I'm in healthcare.